Improvement in combined sash-holders and blind-openers



NrrED [STATES 1 ron.

LOUIS GATHMANN, OF CHICAGO, ILLINOIS.

Specification forming part of Letters Patent No. 119,457, dated October3, 1871.

To all whom t may concern:

Be it known that I, LoUrs GATHMANN, of Chicago, in the county of Cookand State of Illinois, have invented a new and useful Improvement inCombined `Sash-Lock and Blind-Opener 5 and I do declare that thefollowing is a true and accurate description thereof, reference beinghad to the accompanying drawing, and to the `letters of reference markedthereon and being a part` of this specification, in which- Figure lis ahorizontal section of a window fitted with my improved apparatus. Fig. 2is a View of the key enlarged and detached, and Fig. 3. is a frontelevation upon a reduced scale of F. 1f.

Like letters of reference made use of in the several figures indicatelike parts.

This invention relates to a combined sash-lock and blind-openerso'constructed and arranged b grooved casing or frame B. O Cl are thetwo leaves of a blind, hung upon hinges from the casingin the usualmanner. D D1 are two spring locks, similar to those commonly employedupon doors, except` that the spindle and knob are not permanentlyconnected thereto. The force of the spring in said locks is exerted tohold the bolt shut or extended, and the usual rectangular aperture forthe reception of the spindle being left with no spindle therein. Thebolts om these locks engage the upper and lower sashes and hold them atany given position. E El are screws tted to turn in proper bearings, andto engage the iiXed pinions F F1, respectively, which are rigidlyconnected to the leaves of the blind, so that when the screws arerevolved the blinds are opened or closed, as the case may be. Gis adetachable spindle or key, furnished with a knob or handle, g. The shaftof this spindle is made of a less diameter than the square apertures inthe spring locks D D1, so that said shaft will pass freely through saidapertures. At the point c, however, about at the middle ofthe shaft, itincreases in diameter, and is made square to iit the aperture in thelock, and the end of the shaft is also made square, as at b, to fit arectangular socket, c, or opening in the screws.

Now, when it is desired to open the blind the key or spindle is insertedfar enough to cause the square end b to enter the socket c, when thescrew may be operated from the interior of the apartment by simplyturning the knob 5 the round part of the shaft will be at this momentwithin the aperture ofthe lock, so that the sash is not unlocked. Whenit is desired to unlock the sash for the purpose of raising or loweringthe'window, the knob and spindle are withdrawn until .the square portionis within the aperture, when, by turning the knob, the bolt is operatedand the sash disengaged. It will be seen that the lock for the uppersash is at a greater distance 4from the inner face of the casing than isthat of the lower sash, so that in operating the upper sash-lock theportion b of the spindle engages the lock, while in operating the lowersash-lock the portion a is engaged.

For convenience in adjusting the spindle to the proper position twogrooves are cut around the shank of the knob, the inner groove mindicating that the spindle is in position to operate the sash-lock, andthe outer groove n that it is in position to operate the blind-opener,the grooves at each operation being brought Hush with the scutcheon oupon the casing.

Having thus described my invention, what I claim and desire to secure byLetters Patent, 1s

l. The combination of a mechanism for opening and closing the blinds ofa window with a sash-lock or detent, when so arranged and constructedthat both may, be operated by one key or spindle, substantially asspecified.

2. The combination of the screws E, pinions F, sash-lock D, and spindleg, substantially as speciiied.

3. The spindle G, made with the square enlargement c and the squarepoint or enlargement b, and intervening round spaces, substantially asspeciiied and shown. Y

' LOUIS GATHMANN. Witnesses:

J. W. MUNDAY, J ULrUs WILGKE.

